Bryant RedHawk wrote:hau Luke, I don't believe the results were published since I was an undergraduate.
I do keep all my work note books though (my wife doesn't understand why I insist on keeping them, so I am putting them all onto memory sticks now).
Bryant RedHawk wrote:
Luke Simon wrote:Fascinating about the strangler fig. Curious though what kind of soil those 8 ft roots were in. Was it sand?
I measured those root depths in 1969 at my house in Sacramento Ca., the top soil was 100 feet deep, the house was located in an alluvial flood zone of the American River, soil type: Sandy, silty top soil.
I planted comfrey, alfalfa, daikon radish and buckwheat in a space 7' x 25', a transparent barrier of military grade Plexiglas was installed for observation during the experiment.
Results recorded: the comfrey roots went down 8 feet in two years (3.756' the first year), the alfalfa roots went down 7 feet in one year, the daikon radish grew to 3.17 feet in length in one growing season, the buckwheat roots only went down 3.55 feet (it's a shallower rooting plant apparently).
This soil had 29 thousand bacteria per cu. cm, 50 thousand mycelium per cu. cm, 22,419 nematodes per cu. inch and 14,226 amoeba and flagellates per cu. inch.
The soil was checked for these with a Zeiss Dark Field Microscope with a maximum power of 2500X, at the end of the trial this same microscope was fitted with abbe condenser, phase contrast and a polarization filter, gram stain was used for bacterial counts.
This was part of some of my studies done at the University of California, Davis (go Bruins).
Bryant RedHawk wrote:Comfrey can sink roots to around 8 feet.
Strangler fig tree roots are responsible for most of the destruction of 2500 year old temples in Thailand, Cambodia and India.
This same tree has been used to make root bridges for several thousand years too and some of the bridges span over 100 feet.
Oak tree roots can split granite, one of the hardest rocks found on the earth mother.
Mart Hale wrote:https://www.amazon.com/gp/product/0961584831/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
This book really changed my mind about gardening. Besides looking above the soil, beneath is a whole new world.